Home / 81,015.15-111,782.90-47,003.88

Finding the Fourth Proportional to 81,015.15, 111,782.90 and 47,003.88

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Solution

The fourth proportional to 81,015.15, 111,782.90 and 47,003.88 is: 64,854.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,015.15 : 111,782.90 = 47,003.88 : x
  2. Step 2: Convert to fraction form
    81,015.15/111,782.90 = 47,003.88/x
  3. Step 3: Cross multiply
    81,015.15x = 111,782.90 × 47,003.88
  4. Step 4: Simplify right side
    81,015.15x = 5,254,230,017.65
  5. Step 5: Solve for x
    x = 5,254,230,017.65/81,015.15
  6. Step 6: Final answer
    x = 64,854.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.